/*
 * Copyright 2009 Jesse McLaughlin (nzjess@gmail.com)
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *         http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.travelfusion.xmlclient.ri.handler.misc;

import java.util.ArrayList;

import javax.xml.stream.XMLStreamConstants;

import org.travelfusion.xmlclient.handler.HandlesRequestsFor;
import org.travelfusion.xmlclient.impl.handler.AbstractXmlToolRequestStAXResponseHandler;
import org.travelfusion.xmlclient.ri.xobject.misc.XAirport;
import org.travelfusion.xmlclient.ri.xobject.misc.XGetAirportsPageInfoRequest;
import org.travelfusion.xmlclient.ri.xobject.misc.XGetAirportsPageInfoResponse;

/**
 * @author Jesse McLaughlin (nzjess@gmail.com)
 */
@HandlesRequestsFor(XGetAirportsPageInfoRequest.class)
public class GetAirportsPageInfoHandler extends
    AbstractXmlToolRequestStAXResponseHandler<XGetAirportsPageInfoRequest, XGetAirportsPageInfoResponse> {

  @Override
  protected void fillTemplate() throws Exception {
  // nop
  }

  public XGetAirportsPageInfoResponse handleResponse() throws Exception {
    XGetAirportsPageInfoResponse response = new XGetAirportsPageInfoResponse();
    response.setAirports(new ArrayList<XAirport>());

    XAirport airport = null;
    String currentName = null;
    StringBuilder builder = new StringBuilder(32);

    for (int event; ((event = responseReader.next()) != XMLStreamConstants.END_DOCUMENT);) {
      switch (event) {
        case XMLStreamConstants.START_ELEMENT:
          currentName = responseReader.getName().getLocalPart();
          if (airport == null) {
            if ("Airport".equals(currentName)) {
              airport = new XAirport();
            }
          }
          break;
        case XMLStreamConstants.CHARACTERS:
          if (airport != null) {
            builder.append(responseReader.getTextCharacters(), responseReader.getTextStart(), responseReader.getTextLength());
          }
          break;
        case XMLStreamConstants.END_ELEMENT:
          if (airport != null) {
            currentName = responseReader.getName().getLocalPart();
            if ("Name".equals(currentName)) {
              airport.setName(builder.toString().trim());
            }
            else if ("Code".equals(currentName)) {
              airport.setCode(builder.toString().trim());
            }
            else if ("Airport".equals(currentName)) {
              response.getAirports().add(airport);
              airport = null;
            }
            builder.setLength(0);
          }
          currentName = null;
          break;
      }
    }
    return response;
  }
}
